One vertex per element, one color per generator, with an edge from x to x·s.
(1,2)(3,7)(4,6)(5,8)(9,10,15,14)(11,12,13,16)(19,25)(20,26)(22,28)(24,29)(27,31)(30,32)(1,3,5,4)(2,6,8,7)(9,11,15,13)(10,16,14,12)(17,18,21,23)(19,22,27,30)(20,24,26,29)(25,28,31,32)(9,12,15,16)(10,11,14,13)(17,19,26,31,21,27,20,25)(18,22,29,32,23,30,24,28)(1,3,5,4)(2,7,8,6)(9,13,15,11)(10,16,14,12)(18,23)(22,30)(24,29)(28,32)(1,4,5,3)(2,6,8,7)(9,14,15,10)(11,12,13,16)A Cayley diagram is a choice, not a fact about the group. Another drawing of this group — in a book, or on a different generating set — may look nothing like this one.